<template>
	<div>
		<div class="search">
    	  <input v-model="keyword" type="text" placeholder="输入城市名或拼音" class="search-input">
		</div>
		<div 
		  class="search-content" 
		  ref="search"
		  v-show="keyword"
		>
			<ul>
				<li v-for="item of list" class="search-item border-bottom" :key="item.id" @click="handleCityClick(item.name)">
					{{item.name}}
				</li>
				<li class = "search-item border-bottom" v-show="hasNoData">
					没有找到匹配数据
				</li>
			</ul>
		</div>
	</div>
</template>

<script>
	import Bscroll from 'better-scroll'
	export default {
		name:  'CitySearch',
		props:{
			cities: Object
		},
		data () {
			return{
				keyword: '',
				list: [],
				timer: null
			}
		},
		computed:{
			hasNoData(){
				return !this.list.length
			}
		},
		methods:{
			handleCityClick(city){
				this.$store.commit('changeCity',city)
				this.$router.push('/')
			}
		},
		watch: {
			keyword () {
				if (this.timer) {
					clearTimeout(this.timer)
				}
				if(!this.keyword){
					this.list = []
					return
				}
				this.timer = setTimeout(()=>{
					const result = []
					for(let i in this.cities){
						this.cities[i].forEach((value)=>{
							if(value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1 ){
								result.push(value)
							}
						})
					}
					this.list = result
				},100)
			}
		},
		mounted(){
			this.scroll = new Bscroll(this.$refs.search)
		}
	}
</script>

<style lang='stylus' scoped>
	@import '~styles/varibles.styl'                                             
	.search
	  height: .72rem
	  padding: 0 .1rem
	  background: $bgColor
	  .search-input
	    height: .62rem
	    line-height: .62rem
	    width: 100%
	    text-align: center
	    border-radius: .06rem
	    color: #666
	.search-content
	  z-index: 1
	  overflow: hidden
	  position: absolute
	  top: 1.58rem
	  left: 0
	  right: 0
	  bottom: 0
	  background: #eee
	  .search-item
	    line-height: .62rem
	    padding-left: .2rem
	    background: #fff
	    color:#666
</style>